Reproductive and Developmental Biology

The Korean Society of Animal Reproduction (한국동물번식학회)
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Analysis of Semen Parameters, Sperm Activity, and Fertility of Somatic Cell Cloned Hanwoo Bulls

체세포 복제 한우 수소의 정액 성상, 정자의 활동성 및 수정 능력 분석

  • Bae, Seong-Hoon (Animal Biotechnology Division, National Institute of Animal Science, RDA) ;
  • Hwang, Seong-Soo (Animal Biotechnology Division, National Institute of Animal Science, RDA) ;
  • Yang, Byong-Chul (Animal Biotechnology Division, National Institute of Animal Science, RDA) ;
  • Go, Yeoung-Kyu (Animal Biotechnology Division, National Institute of Animal Science, RDA) ;
  • Kim, Dong-Hoon (Animal Biotechnology Division, National Institute of Animal Science, RDA) ;
  • Im, Gi-Sun (Animal Biotechnology Division, National Institute of Animal Science, RDA) ;
  • Choi, Hwa-Sik (Department of Clinical Laboratory Science, Shin Heong College) ;
  • Jin, Dong-Il (Division of Animal Science & Resources, Chungnam National University) ;
  • Yang, Boh-Suk (Animal Biotechnology Division, National Institute of Animal Science, RDA) ;
  • Seong, Hwan-Hoo (Animal Biotechnology Division, National Institute of Animal Science, RDA)
  • 배성훈 (농촌진흥청 축산과학원 응용생명공학과) ;
  • 황성수 (농촌진흥청 축산과학원 응용생명공학과) ;
  • 양병철 (농촌진흥청 축산과학원 응용생명공학과) ;
  • 고응규 (농촌진흥청 축산과학원 응용생명공학과) ;
  • 김동훈 (농촌진흥청 축산과학원 응용생명공학과) ;
  • 임기순 (농촌진흥청 축산과학원 응용생명공학과) ;
  • 최화식 (신흥대학교 임상병리학과) ;
  • 진동일 (충남대학교 동물자원학부) ;
  • 양보석 (농촌진흥청 축산과학원 응용생명공학과) ;
  • 성환후 (농촌진흥청 축산과학원 응용생명공학과)
  • Published : 2007.09.30
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Abstract

This study was performed to investigate the reproductive characteristics of the cloned Hanwoo bulls produced by SCNT. The semen ejaculated from the cloned bulls (C-38 and C-39) and normal Hanwoo bull was properly measured the volume, the number of sperm, and the viability of frozen-thawed sperm. The sperm activity was analyzed using computer assisted sperm analysis (CASA). To analyze fertilizing ability of the cloned bulls, in vitro fertilization and artificial insemination were performed using the frozen-thawed semen. There were no differences in semen volume, sperm concentration, and the viability of frozen-thawed sperm between cloned bulls and normal bull. The difference was statistically significant in total motility, curvilinear velocity (VCL), straight-line velocity (VSL), and average-path velocity (VAP) of both cloned bulls compared to those of normal Hanwoo bull, respectively (p<0.05). The cleavage and blastocyst development rate were not different between the groups. five cloned cows were artificially inseminated using the frozen-thawed semen of C-38, two of them became pregnant. Two second generation calves (one male and one female) were produced. Based on these results, the cloned Hanwoo bulls showed normal reproductive abilities of semen parameters and sperm activity to their comparators and produced cloned calves, although there are some individual differences on the parameters.

본 연구는 체세포를 이용하여 생산된 복제 한우 수소의 번식능력을 검토하기 위해 실시하였다. 복제 한우 수소(C-38 및 C-39) 또는 일반 한우 종모우로부터 정액을 채취하여 정자의 수 및 동결 전 후의 생존성 등을 살펴보았으며, 정자의 운동성 등은 computer assisted sperm analysis(CASA)를 이용하여 측정하였다. 또한, 이들의 수정 능력을 확인하기 위하여 체외수정과 인공수정을 각각 실시하였다. 정액 성상에서는 복제 수소들과 일반 종모우 간에 정액의 양, 정자의 농도 및 동결융해 후의 생존성 등에서 차이가 나타나지 않았다. CASA를 이용한 분석에서 운동성, 곡선 운동 속도(VCL), 직선운동 속도(VSL) 및 평균 진행 속도(VAP) 등은 복제 수소의 정액이 일반 종모우의 정액에 비하여 유의적으로 높았다 (p<0.05).체외수정에 따른 수정란의 분화율 및 배반포로의 발달율은 복제 수소와 일반종모우 간에 차이가 나타나지 않았다. 복제소 정액(C-38)을 이용하여 인공수정을 한 5두의 체세포 복제 대리모에서 암 수 각각 한 두씩의 건강한 복제 후대 송아지 2두를 생산하였다. 이상의 결과를 종합하여 보면, 실험에 공시된 복제 수소 개체간의 차이가 나타나기는 하였지만, 복제 수소는 정액 성상과 정자의 운동성 등에서 일반 종모우와 차이가 없었으며, 또한 인공수정을 통해 송아지를 생산함으로써 정상적인 번식능력이 있음을 확인하였다.

Keywords

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